Douluo Continent: Dong'er, the Peerless King, Reboots Her Life

[A heads-up: This story follows the timeline of Douluo Continent II, features a female protagonist (who doesn't get married), has a scumbag protagonist, includes a system, is anti-Tang San, and is set in Shrek Academy.]
Wang Dong, a model youth of the new era, was transported to the Douluo Continent by a large truck while simply going out to buy food. He became Wang Dong'er, and right from the start, he faces the threat of Tang San… Me, fight Tang San? Really?
Fortunately, at the crucial moment, the system bound itself to Tang San's consciousness, allowing the Heavenly Gang to directly devour him!
Years later, Wang Dong'er, standing at the top, looked down upon all living beings, and only her legend remained in the Douluo Continent.
"A tiny butterfly fluttered its wings at Shrek Academy."
"The unspeakable darkness has desecrated the reputation of the Sea God Pavilion."
"The despicable and shameless thief who stole the country is about to enter the Sun and Moon Capital."
"The young sect leader, a man of great talent and ambition, has already set things right for the Haotian Sect."
"The wise and great sun has cleansed the darkness from the Douluo Continent."
"The supreme God-King has arrived at his loyal divine realm today."
—The Sun of Douluo Continent: The Legend of Wang Dong'er
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This book is also known as "Douluo Peerless: Starting by Devouring Tang San's Divine Consciousness" and "The Douluo Heroine's Life from Zero".